SEISMOTECTONICS OF THE HORN RIDGE (FUTUNA AND AOLFI ISLANDS), A SEGMENT UPLIFTED BY COMPRESSION IN THE FIJI FRACTURE-ZONE

Authors
REGNIER M
Citation
M. Regnier, SEISMOTECTONICS OF THE HORN RIDGE (FUTUNA AND AOLFI ISLANDS), A SEGMENT UPLIFTED BY COMPRESSION IN THE FIJI FRACTURE-ZONE, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 318(9), 1994, pp. 1219-1224
Citations number
5
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre → ACNP
ISSN journal
07644450
Volume
318
Issue
9
Year of publication
1994
Part
2
Pages
1219 - 1224
Database
ISI
SICI code
0764-4450(1994)318:9<1219:SOTHR(>2.0.ZU;2-U
Abstract
A large earthquake (Ms = 6.5) occurred near Futuna and Alofi island (S W Pacific) in March 1993. The focal mechanism solution of the main sho ck and the seismicity pattern of the aftershocks indicate thrust fault ing activity beneath the ridge down to 20 km depth. The uplifting of t he islands and the crustal thickening of the ridge by thrusting are du e to a local compressive regime related to an irregularity of the Paci fic plate boundary along the left lateral transform Fiji fracture zone .